/* $OpenBSD: vga_pci.c,v 1.89 2022/01/09 05:42:58 jsg Exp $ */ /* $NetBSD: vga_pci.c,v 1.3 1998/06/08 06:55:58 thorpej Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Frank van der Linden for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include "vga.h" #if defined(__i386__) || defined(__amd64__) #include "acpi.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef X86EMU #include #endif int vga_pci_match(struct device *, void *, void *); void vga_pci_attach(struct device *, struct device *, void *); int vga_pci_activate(struct device *, int); paddr_t vga_pci_mmap(void* v, off_t off, int prot); #if !defined(SMALL_KERNEL) && NACPI > 0 void vga_save_state(struct vga_pci_softc *); void vga_restore_state(struct vga_pci_softc *); #endif struct cfattach vga_pci_ca = { sizeof(struct vga_pci_softc), vga_pci_match, vga_pci_attach, NULL, vga_pci_activate }; #if !defined(SMALL_KERNEL) && NACPI > 0 int vga_pci_do_post; struct vga_device_description { u_int16_t rval[4]; u_int16_t rmask[4]; char vga_pci_post; }; static const struct vga_device_description vga_devs[] = { /* * Header description: * * First entry is a list of the pci video information in the following * order: VENDOR, PRODUCT, SUBVENDOR, SUBPRODUCT * * The next entry is a list of corresponding masks. * * Finally the last value indicates if we should repost via * vga_pci (i.e. the x86emulator) * bios. */ { /* All machines with GMA500/Poulsbo */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_US15W_IGD, 0x0000, 0x0000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }, 1 }, { /* All machines with GMA500/Poulsbo */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_US15L_IGD, 0x0000, 0x0000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }, 1 }, { /* All machines with GMA600/Oaktrail, 0x4100:4107 */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_GMA600_0, 0x0000, 0x0000 }, { 0xffff, 0xfff8, 0x0000, 0x0000 }, 1 }, { /* All machines with GMA600/Oaktrail, 0x4108 */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_GMA600_8, 0x0000, 0x0000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }, 1 }, { /* All machines with Medfield, 0x0130:0x0137 */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_MDFLD_IGD_0, 0x0000, 0x0000 }, { 0xffff, 0xfff8, 0x0000, 0x0000 }, 1 }, { /* All machines with GMA36x0/Cedartrail, 0x0be0:0x0bef */ { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_GMA3600_0, 0x0000, 0x0000 }, { 0xffff, 0xfff0, 0x0000, 0x0000 }, 1 }, }; #endif int vga_pci_match(struct device *parent, void *match, void *aux) { struct pci_attach_args *pa = aux; if (DEVICE_IS_VGA_PCI(pa->pa_class) == 0) return (0); /* check whether it is disabled by firmware */ if ((pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) != (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) return (0); /* If it's the console, we have a winner! */ if (vga_is_console(pa->pa_iot, WSDISPLAY_TYPE_PCIVGA)) return (1); /* * If we might match, make sure that the card actually looks OK. */ if (!vga_common_probe(pa->pa_iot, pa->pa_memt)) return (0); return (1); } void vga_pci_attach(struct device *parent, struct device *self, void *aux) { struct pci_attach_args *pa = aux; pcireg_t reg; struct vga_pci_softc *sc = (struct vga_pci_softc *)self; #if !defined(SMALL_KERNEL) && NACPI > 0 int prod, vend, subid, subprod, subvend, i; #endif /* * Enable bus master; X might need this for accelerated graphics. */ reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); reg |= PCI_COMMAND_MASTER_ENABLE; pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg); sc->sc_type = WSDISPLAY_TYPE_PCIVGA; printf("\n"); #if !defined(SMALL_KERNEL) && NACPI > 0 #ifdef X86EMU if ((sc->sc_posth = vga_post_init(pa->pa_bus, pa->pa_device, pa->pa_function)) == NULL) printf("couldn't set up vga POST handler\n"); #endif vend = PCI_VENDOR(pa->pa_id); prod = PCI_PRODUCT(pa->pa_id); subid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); subvend = PCI_VENDOR(subid); subprod = PCI_PRODUCT(subid); for (i = 0; i < nitems(vga_devs); i++) if ((vend & vga_devs[i].rmask[0]) == vga_devs[i].rval[0] && (prod & vga_devs[i].rmask[1]) == vga_devs[i].rval[1] && (subvend & vga_devs[i].rmask[2]) == vga_devs[i].rval[2] && (subprod & vga_devs[i].rmask[3]) == vga_devs[i].rval[3]) { vga_pci_do_post = vga_devs[i].vga_pci_post; break; } #endif #ifdef RAMDISK_HOOKS if (vga_aperture_needed(pa)) printf("%s: aperture needed\n", sc->sc_dev.dv_xname); #endif sc->sc_vc = vga_common_attach(self, pa->pa_iot, pa->pa_memt, sc->sc_type); } int vga_pci_activate(struct device *self, int act) { int rv = 0; #if !defined(SMALL_KERNEL) && NACPI > 0 struct vga_pci_softc *sc = (struct vga_pci_softc *)self; #endif switch (act) { case DVACT_SUSPEND: rv = config_activate_children(self, act); #if !defined(SMALL_KERNEL) && NACPI > 0 /* * Save the common vga state. This should theoretically only * be necessary if we intend to POST, but it is preferable * to do it unconditionally, as many systems do not restore * this state correctly upon resume. */ vga_save_state(sc); #endif break; case DVACT_RESUME: #if !defined(SMALL_KERNEL) && NACPI > 0 #if defined (X86EMU) if (vga_pci_do_post) vga_post_call(sc->sc_posth); #endif vga_restore_state(sc); #endif rv = config_activate_children(self, act); break; default: rv = config_activate_children(self, act); break; } return (rv); } paddr_t vga_pci_mmap(void *v, off_t off, int prot) { return -1; } int vga_pci_cnattach(bus_space_tag_t iot, bus_space_tag_t memt, pci_chipset_tag_t pc, int bus, int device, int function) { return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0)); } int vga_pci_ioctl(void *v, u_long cmd, caddr_t addr, int flag, struct proc *pb) { int error = 0; switch (cmd) { case WSDISPLAYIO_GETPARAM: if (ws_get_param != NULL) return (*ws_get_param)((struct wsdisplay_param *)addr); else error = ENOTTY; break; case WSDISPLAYIO_SETPARAM: if (ws_set_param != NULL) return (*ws_set_param)((struct wsdisplay_param *)addr); else error = ENOTTY; break; default: error = ENOTTY; } return (error); } #if !defined(SMALL_KERNEL) && NACPI > 0 void vga_save_state(struct vga_pci_softc *sc) { struct vga_config *vc = sc->sc_vc; struct vga_handle *vh; struct vgascreen *scr; size_t i; char *buf; if (vc == NULL) return; vh = &vc->hdl; /* * Save sequencer registers */ vga_ts_write(vh, syncreset, 1); /* stop sequencer */ buf = (char *)&sc->sc_save_ts; *buf++ = 0; for (i = 1; i < sizeof(sc->sc_save_ts); i++) *buf++ = _vga_ts_read(vh, i); vga_ts_write(vh, syncreset, 3); /* start sequencer */ /* pretend screen is not blanked */ sc->sc_save_ts.mode &= ~0x20; sc->sc_save_ts.mode |= 0x80; /* * Save CRTC registers */ buf = (char *)&sc->sc_save_crtc; for (i = 0; i < sizeof(sc->sc_save_crtc); i++) *buf++ = _pcdisplay_6845_read(&vh->vh_ph, i); /* * Save ATC registers */ buf = (char *)&sc->sc_save_atc; for (i = 0; i < sizeof(sc->sc_save_atc); i++) *buf++ = _vga_attr_read(vh, i); /* * Save GDC registers */ buf = (char *)&sc->sc_save_gdc; for (i = 0; i < sizeof(sc->sc_save_gdc); i++) *buf++ = _vga_gdc_read(vh, i); vga_save_palette(vc); /* XXX should also save font data */ /* * Save current screen contents if we have backing store for it, * and intend to POST on resume. * XXX Since we don't allocate backing store unless the second VT is * XXX created, we could theoretically have no backing store available * XXX at this point. */ if (vga_pci_do_post) { scr = vc->active; if (scr != NULL && scr->pcs.active && scr->pcs.mem != NULL) bus_space_read_region_2(vh->vh_memt, vh->vh_memh, scr->pcs.dispoffset, scr->pcs.mem, scr->pcs.type->ncols * scr->pcs.type->nrows); } } void vga_restore_state(struct vga_pci_softc *sc) { struct vga_config *vc = sc->sc_vc; struct vga_handle *vh; struct vgascreen *scr; size_t i; char *buf; if (vc == NULL) return; vh = &vc->hdl; /* * Restore sequencer registers */ vga_ts_write(vh, syncreset, 1); /* stop sequencer */ buf = (char *)&sc->sc_save_ts + 1; for (i = 1; i < sizeof(sc->sc_save_ts); i++) _vga_ts_write(vh, i, *buf++); vga_ts_write(vh, syncreset, 3); /* start sequencer */ /* * Restore CRTC registers */ /* unprotect registers 00-07 */ vga_6845_write(vh, vsynce, vga_6845_read(vh, vsynce) & ~0x80); buf = (char *)&sc->sc_save_crtc; for (i = 0; i < sizeof(sc->sc_save_crtc); i++) _pcdisplay_6845_write(&vh->vh_ph, i, *buf++); /* * Restore ATC registers */ buf = (char *)&sc->sc_save_atc; for (i = 0; i < sizeof(sc->sc_save_atc); i++) _vga_attr_write(vh, i, *buf++); /* * Restore GDC registers */ buf = (char *)&sc->sc_save_gdc; for (i = 0; i < sizeof(sc->sc_save_gdc); i++) _vga_gdc_write(vh, i, *buf++); vga_restore_fonts(vc); vga_restore_palette(vc); /* * Restore current screen contents if we have backing store for it, * and have POSTed on resume. * XXX Since we don't allocate backing store unless the second VT is * XXX created, we could theoretically have no backing store available * XXX at this point. */ if (vga_pci_do_post) { scr = vc->active; if (scr != NULL && scr->pcs.active && scr->pcs.mem != NULL) bus_space_write_region_2(vh->vh_memt, vh->vh_memh, scr->pcs.dispoffset, scr->pcs.mem, scr->pcs.type->ncols * scr->pcs.type->nrows); } } #endif